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2 Sheets-Sheet 1. W. VAN ANDEN.

File Cutting Machine.

. Patented Aug." 14, 1860.

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2 Sheets'-Sheet 2. W. VAN ANDEN.

File Cutting Machine.

Patented Aug 14, 1860.

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STATES PATENT OFFICE.

WILLIAM VAN ANDEN, OF POUGHKEEPSIE, NE'W YORK.-

MACHINE FOR CUTTING FILES.

Specification of Letters Patent No. 29,641, dated August 14, 1860.

To all whom it may concern:

Be itknown that I, WILLIAM VAN ANDEN, of the city of Poughkeepsie,county of Dutchess, and State of New York, have invented certain new anduseful Improvements in Machines for Cutting Files; and I do herebydeclare the following to be a full description of the same, referencebeing had to the annexed drawings, and to the letters of referencemarked thereon, making a part of this specification, in which Figure Iis a right hand side elevation of machine. Fig. II is a plan view ofmachine. Fig. III is a left hand side elevation of machine. Fig. IV is afront end elevation of machine. Fig. V is a sectional and plan view ofchisel holder. Fig. VI is a side elevation of double cam.

The nature of my invention consists, first, in the mode of constructingthe machine in the arrangement of the cams used for tilting the hammerin order to strike two light blows of the hammer upon the chisel inorder to form a tooth instead of one heavy blow which is very likely tobreak the chisel; second, the formation of the chisel holder the forwardpart of which by suitable means as hereafter described is made to pressdown on the file blank to hold it firm while the tooth is hereby beingcut and also raising it when the bed is fed forward for the chisel tooperate on another tooth and which holder also allows the chisel to bedepressed to the bottom of the tooth by the force of the hammer and toremain depressed below the lower face of the holder while it is beinglifted up for the file blank to advance and upon the chisel holder beingagain pressed down on the file blank forces the chisel up by means ofits coming first in contact with the file blank and thereby making itadjust itself to the face of the file blank.

I will now proceed to describe the construction and operation of mymachine.

A is the frame of the machine across the top of the frame and formingpart of it is a table board B having a groove C out in its upper face.This groove traverses the length of the table in a slightly obliquedirection from the front and right hand side of the machine to the backand left side of it. The object of this is to cause the lower half ofthe compound bed D by reason of a tongue A on its lower surface totraverse the length of the feed table in an oblique direction. On itsupper face are two grooves Z2 6 from the left to the right sideobliquely across it into which fit tongues C C in the lower face of theupper half E of the compound bed. The object of this is to cause up orforward motion by an independent motion of the positive feed against theedge of the chisel in consequence of the percussion of the hammer uponthe file blank F and the difference of resisting surface of the metalagainst the back edge of the chisel in consequence of its angle of cutwedging it forward at the time of cutting the teeth.

f is the tang holder having hooks on its upper back edge, so as to holdthe file blank down upon the bed. The tang holder fits into a mortisehole in the bed D with just sufiicient room to allow of its working upand down as the point of the file is depressed while under the action ofthe chisel.

72. is a lever jaw attached to the bed for holding against the side ofthe file blank while being cut.

H is a vertical guide post at the back of the frame A. In the guide wayof the post H works a triangular-shaped gate I, having on its longestside or hypotenuse a tongue 6 This works into a groove (Z in the backend of the lower half of the bed D, so that as the gate is worked bymeans of the female screw J at the back edge of it, being forced intogear by a foot lever O at the side of the frame A with a vertical malescrew K rotated by means of a saw or ratchet wheel L, secured upon itsupper end, and a worm M on the end of the main driving shaft N.

The compound bed is fed up and under the action of the chisel asrequired and drawn back again by the female screw J being thrown out ofgear again by dropping the foot lever O.

P, P are two pawls on the main driving shaft M. These pawls as the shaftN rotates operate a ratchet wheel Q, running loosely on the hammer shaftor axis R. At the side of the wheel Q is a stiffer spring S, having oneend secured to the axis R and at its 0pposite side a detent pin S whichby its adjustment acts against a pin S in the axis R to hold the ratchetwheel when it reacts after the file has been cut so as to preserve auniformity ofstarting point in the force of the hammer in cutting thefile, while the mcreasing force of the hammer is regulated by the pawlswinding up the spiral spring on the ratchet wheel one tooth or more at 7each revolution of the driving shaft N and is kept at its maximum pointuntil the file has been cut when the pawls are thrown out of gear by anintercepting bar T and lever T arranged at the side of the frame holdingthe hammer shaft in under them and also of the toe T of the hammer T soas to allow the main shaft N to continue its motion while the new fileblank is being put on the machine and adjusted.

5 is the chisel stock secured on an axis U arranged on a part of theframe of the machine and which chisel stock is composed and constructedof the shell or outside part X the loose back X the slide piece or nut Xthrough which the loose back X works and which back is kept firmly up tothe chisel X which is placed in the space in between the loose back Xand the inside of the front of the shell X by means of the action of thespring X upon the back end of the loose back X and thus enabling thechisel X to work in the said space and allow it to find its ownadjustment and yet to be held firmly at the angle at which it is set inorder to cut the file tooth.

Y is a lever arranged in the frame of the machine A in such a mannerthat the front extremity lies upon and exerts its force on a pininserted in the axis of the chisel stock U in such a manner that whenthe other extremity of said lever is raised by means of the cam Z on theshaft N, that it will depress the front end of the chisel holder 5 onthe file blank in advance of the blow of the hammer upon the blank, sothat it may hold the blank down and at the same time be at rest when thehammer strikes the head of the chisel, the force of the hammer at eachblow causing the chisel to project down below the lower face of thechisel holder 5 and to the bottom of the tooth cut and remain sodepressed below the face of said chisel holder until it is raised up asheretofore described for the file blank 'to advance the necessarydistance for another tooth, and upon the chisel holder being againpressed down on the file blank the chisel being now extended below thesaid surface of the holder comes first in contact with the file blankand as the pressure continues causes the chisel to raise up in its seatand adjust itself to the face of the file blank all the time being heldagainst the front inside face of the shell X by the pressure of thesprings X on the loose back X working in the nut or'slide X and by thismeans rendering the said chisel holder 5 self adjustable as regards thechisel and the file blank.

There has always been one source of great disappointment and almost afatal defect in the using of these machines viz: the breakage of thechisel, by the force and weight of the hammer necessary to strike a blowon the chisel suflicient to cut the tooth of the file as deep asrequired at one stroke and all attempts to remedy this defect havehereto failed. In order to avoid this I make the cam 4, which depressesthe toe of the hammer handle T in order to strike the blow of what maybe called a double cam that is made with two projections which gives thehammer a double stroke on the chisel in cut-' ting each tooth andthereby only using one half of the power necessary to cut the tooth atone blow, thus enabling to stand much longer by having its work divided.

I do not mean to confine myself to two blows if more should be necessaryfor the support of the chisel, nor do I mean to confine myself to theformation and use of the cam as various means may be used for liftingthe hammer.

It will be perceived that this machine makes but one series of cuts andmay therefore be termed a right handed machine.

To make the opposite transverse cuts the machine will be made as aleft-handed machine requiring therefore two machines to complete theoperation of cutting the file. This, however, is not absolutelynecessary, but prefer it rather than make the one machine changeable toaccomplish this result, and besides as many machines will be used incutting files I do not deem it any additional expense to have some maderight handed and others made left handed for the purposes described.

Having described my invention and its operation I will proceed to setforth what I claim and deem to secure by Letters Patent of the UnitedStates 1. Striking a series of blows on the chisel in combination withthe file blank while at a state of rest and in the same tooth for thepurposes as heretofore set forth and described.

2. The formation of the self adjustable chisel holder viz., by thecombination of the shell X the yielding or loose back X the nut or slideX the chisel X spring X or their equivalents for the purposes heretoforeset forth and described.

WM. VAN ANDEN.

Witnesses:

JOHN D. B. CoLLER, JOSEPH CARR.

